JPH01122923A - Superconductor - Google Patents
SuperconductorInfo
- Publication number
- JPH01122923A JPH01122923A JP62281004A JP28100487A JPH01122923A JP H01122923 A JPH01122923 A JP H01122923A JP 62281004 A JP62281004 A JP 62281004A JP 28100487 A JP28100487 A JP 28100487A JP H01122923 A JPH01122923 A JP H01122923A
- Authority
- JP
- Japan
- Prior art keywords
- superconductor
- current density
- oxide
- bismuth
- superconducting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002887 superconductor Substances 0.000 title claims abstract description 20
- 239000010949 copper Substances 0.000 claims abstract description 12
- 229910052787 antimony Inorganic materials 0.000 claims abstract description 8
- 229910052788 barium Inorganic materials 0.000 claims abstract description 8
- 229910052797 bismuth Inorganic materials 0.000 claims abstract description 8
- 229910052796 boron Inorganic materials 0.000 claims abstract description 8
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052802 copper Inorganic materials 0.000 claims abstract description 7
- 229910052727 yttrium Inorganic materials 0.000 claims abstract description 7
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 6
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims abstract description 6
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims abstract description 6
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910044991 metal oxide Inorganic materials 0.000 claims description 6
- 150000004706 metal oxides Chemical class 0.000 claims description 6
- WMWLMWRWZQELOS-UHFFFAOYSA-N bismuth(iii) oxide Chemical compound O=[Bi]O[Bi]=O WMWLMWRWZQELOS-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052745 lead Inorganic materials 0.000 abstract description 3
- 229910011255 B2O3 Inorganic materials 0.000 abstract description 2
- 238000005245 sintering Methods 0.000 abstract description 2
- GHPGOEFPKIHBNM-UHFFFAOYSA-N antimony(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Sb+3].[Sb+3] GHPGOEFPKIHBNM-UHFFFAOYSA-N 0.000 abstract 1
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 description 10
- 229910000416 bismuth oxide Inorganic materials 0.000 description 9
- 239000000843 powder Substances 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000005751 Copper oxide Substances 0.000 description 3
- 229910000431 copper oxide Inorganic materials 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
Landscapes
- Inorganic Compounds Of Heavy Metals (AREA)
- Superconductor Devices And Manufacturing Methods Thereof (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明は、超電導体に係わり、特に高磁場マグネット、
限流器、磁気推進装置等のエネルギー機器に使用するの
に好適な超電導体に関する。[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to superconductors, particularly high-field magnets,
The present invention relates to superconductors suitable for use in energy devices such as current limiters and magnetic propulsion devices.
（従来の技術）
最近、イツトリウム（Ｙ）、バリウム（Ｂａ）、銅（Ｃ
ｕ）からなる三成分金属酸化物（Ｙ −Ｂａ−Ｃｕ三成
分金ｈ１酸化物）からなる超電導材料が開発さ九た。(Prior art) Recently, yttrium (Y), barium (Ba), copper (C
A superconducting material consisting of a ternary metal oxide (Y-Ba-Cu ternary gold h1 oxide) was developed.
（例えば、 Ｊｐｎ、 Ｊ、 Ａｐｐｌ、 Ｐｈｙｓ、
２６（１９８７）Ｌ３２０その他）これは液体窒素温
度（７７Ｋ ）以上の高温で超電導に転移するものであ
り、したがって、高温超電導体とも呼ばれる。冷媒とし
て使われる液体窒素は、従来用いられてきた液体ヘリウ
ムに比べ安価であるため、この臨界温度Ｔｃが液体窒素
温度（７７Ｋ ）以上ということは、実用上大変有利で
ある。例えば、高温超電導体を利用したものに、超電導
材がある。これは、イツトリウム、バリウム。(For example, Jpn, J, Appl, Phys,
26 (1987) L320 et al.) It transforms into superconductivity at high temperatures above the liquid nitrogen temperature (77 K), and is therefore also called a high-temperature superconductor. Since liquid nitrogen used as a refrigerant is cheaper than conventionally used liquid helium, it is practically advantageous that the critical temperature Tc is higher than the liquid nitrogen temperature (77K). For example, there are superconducting materials that utilize high-temperature superconductors. These are yztrium and barium.
銅の酸化物を混合・造粒、仮焼した後、粉砕し。Copper oxide is mixed, granulated, calcined, and then crushed.
銀等のシース材に充填し、圧延し、再熱処理して、超電
導線材化したものである。この高温超電導材を用いた超
電線材は加工性にも優れ、超電導特性も良好であり、大
型・高磁場マグネットなどの超電導体として大変優れて
いる。It is made into a superconducting wire by filling a sheath material such as silver, rolling it, and reheating it. Superconducting wires made from this high-temperature superconducting material have excellent workability and good superconducting properties, making them excellent as superconductors for large, high-field magnets, etc.
（発明が解決しようとする問題点）
ところで、ＹＢａ−Ｃｕ三成分金属酸化物超電導体には
、次の様な問題があった。即ち、超電導体に流せる電流
密度が小さいという欠点があった。(Problems to be Solved by the Invention) By the way, the YBa-Cu ternary metal oxide superconductor has the following problems. That is, there is a drawback that the current density that can be passed through the superconductor is low.
超電導体をエネルギー機器に使用する場合、この電流密
度が小さいというのは実用化の妨げとなり、電流密度が
大きい超電導体が望まれていた。When superconductors are used in energy devices, the low current density hinders their practical application, and a superconductor with a high current density has been desired.
本発明は上記要望に鑑みなされたもので、電流密度が大
きい超電導体を提供するものである。The present invention was made in view of the above-mentioned needs, and provides a superconductor with a high current density.
（問題点を解決するための手段）
かかる目的を達成するために、本発明は、イツトリウム
、バリウム、銅からなる三成分金属酸化物超電導体にビ
スマス、アンチモン、ホウ素、鉛のうち少なくとも１つ
をＢｘ、Ｏ，ｔ ｓｂ、ｏ、 ｌ ｓ、ｏ３１ｐｂ２ｏ
、に換算して０．１〜５ｗｔ％含有させたことを特徴と
する６
（作 用）
ビスマス、アンチモン、ホウ素、鉛のうち少なくとも１
つを含むことにより、素体の焼結密度が上がり、素体が
緻密になることにより、電流密度をあげることができる
。(Means for Solving the Problems) In order to achieve the above object, the present invention includes adding at least one of bismuth, antimony, boron, and lead to a ternary metal oxide superconductor consisting of yttrium, barium, and copper. Bx, O, t sb, o, l s, o31pb2o
6 (Function) At least one of bismuth, antimony, boron, and lead.
By including these elements, the sintered density of the element body increases, and the element body becomes denser, thereby increasing the current density.
（実施例） 以下に発明の一実施例を詳細に説明する。(Example) An embodiment of the invention will be described in detail below.
まず、酸化イツトリウム（Ｙ２Ｏ，）、酸化バリウム（
Ｂａｄ）、酸化銅（Ｃｕｂ）の粉末をそれぞれ０．５モ
ル、１．０モル、３．０モルの割合で秤量し、さらに酸
化ビスマス（ＢｘｔＯ３）を０．１〜１０ｖｔ％加えた
。これらの原料粉末を十分に混合した後、この粉末を空
気中で８５０℃で焼成した。この工程によりＹ −Ｂａ
−Ｃｕ三成分金属酸化物が形成される。さらに、この
仮焼粉をアセトンとともに混合・粉砕した後、超電導特
性をもたせるために、酸素雰囲中で８５０℃で熱処理し
た。この粉末をアセトンと共に粉砕し、微細粉を得た。First, yttrium oxide (Y2O,), barium oxide (
Powders of copper oxide (Bad) and copper oxide (Cub) were weighed in proportions of 0.5 mol, 1.0 mol, and 3.0 mol, respectively, and bismuth oxide (BxtO3) was added in an amount of 0.1 to 10 vt%. After thoroughly mixing these raw material powders, this powder was fired at 850° C. in air. Through this process, Y-Ba
-Cu ternary metal oxide is formed. Further, this calcined powder was mixed with acetone and pulverized, and then heat-treated at 850° C. in an oxygen atmosphere in order to impart superconducting properties. This powder was ground with acetone to obtain a fine powder.
この粉末を銀製のシーンに充填し、冷間圧延法により引
伸し、再熱処理して超電導線材を得た。This powder was filled into a silver sheen, stretched by cold rolling, and reheated to obtain a superconducting wire.
次に、この超電導線材の超電導特性について説明する０
図は、７７Ｋにおける電流密度の酸化ビスマス（Ｂ１２
０３）含有量依存性を示す実験の結果得られた特性図で
ある。この結果かられかるように、酸化ビスマス（Ｂｌ
ｍｏｓ）を含有しない時と酸化ビスマス（Ｂｉ２０ｉ）
含有量が０．０５〜１０％１１％の場合、電流密度は１
０”Ａ／ｃｎｔの桁であるのに比べて酸化ビスマス（Ｂ
ｉｔ ｏ３ ）含有量が０．１〜５ｗｔ％の場合、電流
密度は１０３Ａ／ａ＃の桁に電流密度が１桁上がってい
る。Next, we will explain the superconducting properties of this superconducting wire.
The figure shows the current density of bismuth oxide (B12) at 77K.
03) It is a characteristic diagram obtained as a result of an experiment showing content dependence. As can be seen from this result, bismuth oxide (Bl
Bismuth oxide (Bi20i) and bismuth oxide (Bi20i)
When the content is 0.05-10%11%, the current density is 1
Bismuth oxide (B
When the it o3 ) content is 0.1 to 5 wt%, the current density increases by one order of magnitude to 103 A/a#.
このように電流密度が大きい超電導体が得られることは
超電導マグネット、超電導限流器等の超電導エネルギー
機器を作る上で重要である。Obtaining a superconductor with such a high current density is important for producing superconducting energy devices such as superconducting magnets and superconducting fault current limiters.
本発明の実施例で、電流密度が上がった直接の原因は明
らかではないが、概略以下のように考えられる。酸化ビ
スマス（Ｂｉ２０． ）のような低融点物質を微量添加
することにより、焼結過程での液相焼結、即ち反応性液
体を含む焼結が促進され、緻密で焼結密度の高い素体が
得られることになり、その結果、電流密度が上昇すると
考えられる。酸化ビスマス（Ｂ１２０３）の添加量につ
いては、０．１ｗｔ％未満では液相焼結を促進する効果
がないため、また５ｗｔ％を超えるとビスマスは不純物
としての効果が大きくなり超電導状態そのものが不安定
になるためと考えられる。Although the direct cause of the increase in current density in the examples of the present invention is not clear, it is thought to be roughly as follows. By adding a small amount of a low-melting point substance such as bismuth oxide (Bi20. is obtained, and as a result, it is thought that the current density increases. Regarding the amount of bismuth oxide (B1203) added, if it is less than 0.1 wt%, it will not have the effect of promoting liquid phase sintering, and if it exceeds 5 wt%, the effect of bismuth as an impurity will increase and the superconducting state itself will become unstable. This is thought to be due to the purpose of
上記実施例では酸化ビスマスについて述べたが、 ４同
様にアンチモン、ホウ素、鉛においてもｓｂ、ｏ、。In the above example, bismuth oxide was described, but similarly, antimony, boron, and lead also have sb, o, and the like.
Ｂ２０．、 Ｐｂ、Ｏ，に換算して０．１〜５ｖｔ％の
範囲で含有させることにより同様の結果が得られること
を確認している。B20. It has been confirmed that similar results can be obtained by containing Pb and O in a range of 0.1 to 5 vt%.
さらに、実施例では、酸化物原料を用いたが、焼結して
酸化物になるものであれば何でもよく。Further, in the examples, an oxide raw material was used, but any material may be used as long as it becomes an oxide when sintered.
例えば水酸化物・炭酸化物等であっても同じ効果が得ら
れることはいうまでもない。また。イツトリウム、バリ
ウム、銅の組成も上記実施例に限定されるものではない
。It goes without saying that the same effect can be obtained with hydroxides, carbonates, etc., for example. Also. The compositions of yttrium, barium, and copper are also not limited to the above examples.
以上述べてきたように、本発明によれば、イツトリウム
、バリウム、銅からなる三成分金属酸化物を主成分とし
、超電導特性を有する素体において、少なくともビスマ
ス、アンチモン、ホウ素。As described above, according to the present invention, in an element body having superconducting properties and containing a ternary metal oxide mainly composed of yttrium, barium, and copper, at least bismuth, antimony, and boron are present.
鉛のうち少なくとも１つをＢ１２Ｏ３ｒ ５ｂｚ０３ｔ
Ｂ２Ｏ３＋Ｐｂ２Ｏ３に換算して０．１〜５ｗｔ％含
有させることにより大きな電流密度を有する超電導体を
得ることができる。At least one of lead is B12O3r 5bz03t
By containing 0.1 to 5 wt% in terms of B2O3+Pb2O3, a superconductor having a large current density can be obtained.
図は１本発明の実施例に係わる、７７Ｋにおける電流密
度のＢｉ２Ｏ３含有量依存性を示した特性図である。The figure is a characteristic diagram showing the dependence of current density on Bi2O3 content at 77K according to an example of the present invention.
Claims (1)
からなる三成分金属酸化物を主成分とし、超電導特性を
有する素体において、ビスマス、アンチモン、ホウ素、
鉛のうち少なくとも１つをＢｉ＿２Ｏ＿３Ｓｂ＿２Ｏ＿
３Ｂ＿２Ｏ＿３、Ｐｂ＿２Ｏ＿３に換算して０．１〜５
ｗｔ％含有することを特徴とする超電導体。Yttrium (Y), barium (Ba), copper (Cu)
The main component is a ternary metal oxide consisting of bismuth, antimony, boron,
At least one of lead is Bi_2O_3Sb_2O_
3B_2O_3, 0.1 to 5 in terms of Pb_2O_3
A superconductor characterized by containing wt%.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62281004A JPH01122923A (en) | 1987-11-09 | 1987-11-09 | Superconductor |
| KR1019880014598A KR910008717B1 (en) | 1987-11-09 | 1988-11-07 | Super conductor |
| US07/269,065 US4959348A (en) | 1987-11-09 | 1988-11-09 | Y-Ba-Cu-O superconductor for containing antimony or boron to increase current density |
| EP88118668A EP0315977A3 (en) | 1987-11-09 | 1988-11-09 | Superconductor material comprising a three-component metallic oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62281004A JPH01122923A (en) | 1987-11-09 | 1987-11-09 | Superconductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01122923A true JPH01122923A (en) | 1989-05-16 |
Family
ID=17632932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62281004A Pending JPH01122923A (en) | 1987-11-09 | 1987-11-09 | Superconductor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01122923A (en) |
-
1987
- 1987-11-09 JP JP62281004A patent/JPH01122923A/en active Pending
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